Cassette storage container



FIG. 1 is a top plan view of a cassette storage container showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a perspective view of the cassette storage container in the open position. 

The ornamental design for a cassette storage container, substantially as shown and described. 